[go: up one dir, main page]

US4106544A - Electrically operated folding partition - Google Patents

Electrically operated folding partition Download PDF

Info

Publication number
US4106544A
US4106544A US05/835,024 US83502477A US4106544A US 4106544 A US4106544 A US 4106544A US 83502477 A US83502477 A US 83502477A US 4106544 A US4106544 A US 4106544A
Authority
US
United States
Prior art keywords
partition
panels
hinge axes
center line
force
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/835,024
Other languages
English (en)
Inventor
Guy E. Dixon
Thomas M. Dixon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panelfold Inc
Original Assignee
Panelfold Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panelfold Inc filed Critical Panelfold Inc
Priority to US05/835,024 priority Critical patent/US4106544A/en
Application granted granted Critical
Publication of US4106544A publication Critical patent/US4106544A/en
Priority to AU39064/78A priority patent/AU517049B2/en
Priority to MX174579A priority patent/MX147404A/es
Priority to PT68453A priority patent/PT68453A/pt
Priority to NZ188259A priority patent/NZ188259A/xx
Priority to NLAANVRAGE7808960,A priority patent/NL187922C/xx
Priority to FI782688A priority patent/FI64222C/fi
Priority to CA310,925A priority patent/CA1094112A/en
Priority to JP11216278A priority patent/JPS5451235A/ja
Priority to GB7836617A priority patent/GB2004584B/en
Priority to DE2840074A priority patent/DE2840074C2/de
Priority to BE190558A priority patent/BE870567A/xx
Priority to PH21615A priority patent/PH16942A/en
Priority to SE7809796A priority patent/SE427291B/sv
Priority to DK411678A priority patent/DK151141C/da
Priority to IT27789/78A priority patent/IT1099083B/it
Priority to BR7806097A priority patent/BR7806097A/pt
Priority to FR7826705A priority patent/FR2403442A1/fr
Priority to NO783172A priority patent/NO146068C/no
Priority to AT0676278A priority patent/AT378570B/de
Priority to CH978178A priority patent/CH635163A5/de
Priority to ES473515A priority patent/ES473515A1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/48—Wings connected at their edges, e.g. foldable wings
    • E06B3/481—Wings foldable in a zig-zag manner or bi-fold wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/605—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for folding wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof

Definitions

  • the present invention generally relates to an electrically operated folding partition, hinged wall system, or the like, including a plurality of rigid panels accordion folded for movement between closed and open positions with the panels being supported by a longitudinal track, or the like, and provided with a control arrangement so that the panels will be automatically positioned in a straight line, flat condition when in their fully closed position and automatically moved to their folded, stacked position when in their fully open position with the operation of the panels being in response to an appropriate control switch, or the like, thereby eliminating manual initial movement of the panels to "break" the panels from their straight line, flat fully closed position when they are to be moved to an open position and eliminating manual final movement of the panels into a straight line, flat condition when being moved to a fully closed position.
  • Another object of the invention is to provide a folding partition in accordance with the preceding object in which the panels are highedly connected by hinges having their hinge axes at opposite surfaces of the partition so that the panels may accordion fold between an open, center stacked relationship and an extended position with the panels aligned without manual initial or final movement of the panels.
  • a further important object of the invention is to provide an electrically operated folding partition in accordance with the preceding objects in which the difference in the over-all length of the panels when in their straight, flat, fully closed position and their longer length when the hinge axes between the panels are disposed in alignment is used in combination with a control system for the power means which includes a reversible electric motor to automatically move the panels from a flat, straight line closed position to a center stacked open position and from the open position to the closed position in a simple but yet effective and dependable manner.
  • FIGS. 1a-1d schematically illustrate the movement of the panels from their fully closed position to their fully open position.
  • FIGS. 2a-2d schematically illustrate the movement of the panels from their open position to their fully closed position.
  • FIG. 3 is a fragmental sectional view of a typical hinge connection between adjacent panels.
  • FIG. 4 is a diagrammatic view of the control system for the folding partition.
  • the folding partition is generally designated by numeral 10 and includes a plurality of pivotally connected rigid panels 12 with one of the panels being a half panel 12' and pivotally connected to a jamb 14 defining an opening to be closed by the partition 10 with the opposite edge of the opening being defined by a jamb 16 which is engaged by the free edge of the outermost panel 12.
  • the panels 12 are conventional in construction and may be constructed of various materials with the thickness of such panels nominally being 2 to 3 inches and the width of the panels 12 nominally being 4 feet, although these dimensions may obviously vary. Also, the height of the panels may vary depending upon the ceiling height or position of an overhead supporting trackway (not shown) which is engaged by supporting carriages 18 in a conventional and well known manner.
  • the panels 12 have end edges, which provide an interlocking and sealing construction with the side stiles of the panels being illustrated only in FIG. 3 with the double channel configuration of the stiles 20 providing for stability and rigidity of the adjacent panels when they are in their fully closed, locked position.
  • the stiles are hingedly connected at opposite surfaces of the panels by hinges 22 with the hinge axes being vertical and a similar hinge 24 interconnects the half panel 12' to the jamb 14 with all the hinge axes being disposed laterally of the center line of the supporting trackway and the line of movement of the carriages 18 a distance approximately one-half of the thickness of the panels so that the center line of the half panel 12' will be aligned with the center line of movement of the carriages 18 and in alignment with the center of the partition when in fully closed position as illustrated in FIG. 1a.
  • the center line of the partition and the center line of movement of the carriages 18 and the center line of the trackway is schematically illustrated by a broken line and designated by reference numeral 26.
  • Optional spaced guide rails 28 are provided at the top of the opening at the jamb 16 with the guide plates extending most of the distance between the jambs and having outwardly curved or flared free ends 30 with one guide plate 28 being slightly longer than the other.
  • the guide rails 28 may vary in length and extend to a position where the endmost panel 12 will engage the flared end 30 as it leaves the stacked position and moves toward the FIG. 2a position.
  • a sensor switch 32 is mounted on the jamb 16 in any suitable manner with a sensing finger 34 extending into the path of movement of the endmost panel 12.
  • a sensor switch 36 having a finger 38 is positioned and supported in any suitable manner adjacent the jamb 14 but in a position for engagement by a projection 40 on the end-most panel 12 to stop the folding partition in its stacked fully open position with the sensor 36 also resetting the control means for the next closing cycle. While a side closing arrangement is illustrated, a center closing partition or any other arrangement of panels may be used with this invention.
  • FIG. 1a illustrates the partition 10 in fully closed position in which the panels 12 are disposed in flat, aligned and locked condition with the center of the panels being coincident to the center line of the track and the center line of the path of movement of the carriages 18.
  • the partition provides a flat wall forming a complete closure of the open area between the jambs 14 and 16.
  • the wall may be used for various functional purposes. For example, chalk boards, tack boards, or other working surfaces may be provided throughout the full width or length or in any part of the surfaces of the panels.
  • FIG. 1d illustrates the fully open position of the partition 10 in which the panels are center stacked in a compact and neat condition. While a center stacked arrangement is illustrated, the panels may be side stacked, angle stacked or stacked in any orientation when in open position.
  • the endmost panel 12 or any of the other panels is connected by any suitable means to a reversible motor with the motor being connected through a cable drive or the like, to the carriage 18 on the endmost panel 12.
  • a reversible motor with the motor being connected through a cable drive or the like, to the carriage 18 on the endmost panel 12.
  • FIGS. 2a-2d illustrate the closing operation of the partition.
  • the motor is energized in the "close” direction.
  • the hinge axes 22 approach the center line 26 so that as the end edge of the endmost panel 12 contacts the finger 34 of the sensor 32, the hinge axes 22 approach and cross over the center line 26 due to inertia forces and the sensor 32 deenergizes the motor and reverses the motor and runs it in the "open” direction for a predetermined short time setting of a time delay relay so that the over-all length of the partition is reduced by moving the panel 12 a very short distance in the "open” direction, thereby enabling the shortening of the over-all length of the partition, thus moving the hinge axes 22 completely to the position illustrated in FIG. 2d with the center line of the panels 12 coinciding with the center line 26.
  • the movement of the hinge axes is power operated toward the center line 26 and as the hinge axes approach the center line 26, power is disconnected from the endmost panel 12 so that inertial forces carry the hinge axes 22 across the center line 26 after which power is then again applied to the endmost panel 12 but in the opposite direction so that the hinge axes 22 will continue to move away from the center line 26 which they have just crossed over toward either the fully closed or fully open position.
  • time delay relay "T1” At the end of the time setting of time delay relay "T1", the normally-closed, timed-to-open contact "T1-1" opens, breaking the circuit and deenergizing close relay "CR", locking relay "LR”, time delay relay "T1" and the "open” contactor so that the motor stops and the partition is in the locked closed position.
  • the partition is electrically driven forward which causes the panels 12 to unstack as shown and the forward panel enters the guides and approaches the sensor.
  • the sensor reverses movement of the outermost panel which causes the partition to lock all of the panels in a straight position with the momentum and inertia of the panels as the hinge axes 22 approaches the center line 26 carrying the hinge axes across the center line 26 which together with the reversing of the motor for a short period of time enables the partition to, in effect, slightly shorten so that the panels will be retained in their straight line, fully open position.
  • the partition is electrically driven forward which causes the panels 12 to unstack as shown and the forward panel enters the guides and approaches the sensor 32.
  • the sensor reverses movement of the endmost panel which causes the partition to lock all of the panels in a straight position with the momentum and inertia of the panels as the hinge axes 22 approach the center line 26 carrying the hinge axes across the center line 26 which together with the reversing of the motor for a short period of time enables the partition to, in effect, slightly shorten so that the panels will be retained in their straight line, fully closed position.
  • This arrangement eliminates the necessity of imparting lateral force to the folding partition or panels when moving from a fully closed to an open position and eliminates the necessity of imparting lateral forces to the partition or panels when moving from the open position to the fully closed position, as compared with prior devices which use a secondary apparatus which applies lateral force to an endmost panel or panels.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Extensible Doors And Revolving Doors (AREA)
  • Dry Shavers And Clippers (AREA)
US05/835,024 1977-09-20 1977-09-20 Electrically operated folding partition Expired - Lifetime US4106544A (en)

Priority Applications (22)

Application Number Priority Date Filing Date Title
US05/835,024 US4106544A (en) 1977-09-20 1977-09-20 Electrically operated folding partition
AU39064/78A AU517049B2 (en) 1977-09-20 1978-08-18 Electrically operated folding wing
MX174579A MX147404A (es) 1977-09-20 1978-08-18 Mejoras en tabique divisorio plegable accionado electricamente
PT68453A PT68453A (en) 1977-09-20 1978-08-21 Electrically operated folding partition
NZ188259A NZ188259A (en) 1977-09-20 1978-08-25 Electric drive sequencing to open and close an electrically driven concertina folding door
NLAANVRAGE7808960,A NL187922C (nl) 1977-09-20 1978-08-31 Elektrisch bedienbare vouwwand.
FI782688A FI64222C (fi) 1977-09-20 1978-09-01 Elektriskt hopvikbar mellanvaegg
CA310,925A CA1094112A (en) 1977-09-20 1978-09-08 Electrically operated folding partition
JP11216278A JPS5451235A (en) 1977-09-20 1978-09-12 Motor folding type partition
GB7836617A GB2004584B (en) 1977-09-20 1978-09-13 Electrically operated folding partitions
DE2840074A DE2840074C2 (de) 1977-09-20 1978-09-14 Faltbare Trennwand
BE190558A BE870567A (fr) 1977-09-20 1978-09-18 Cloison pliante actionnee par voie electrique
FR7826705A FR2403442A1 (fr) 1977-09-20 1978-09-18 Cloison accordeon a commande electrique
PH21615A PH16942A (en) 1977-09-20 1978-09-18 Electrically operated folding partition
SE7809796A SE427291B (sv) 1977-09-20 1978-09-18 Elektriskt manovrerad vikvegg
DK411678A DK151141C (da) 1977-09-20 1978-09-18 Elektrisk betjent foldedoer
IT27789/78A IT1099083B (it) 1977-09-20 1978-09-18 Parete divisoria o tramezzo pieghevole ad azionamento elettrico
BR7806097A BR7806097A (pt) 1977-09-20 1978-09-18 Divisoria dobravel
NO783172A NO146068C (no) 1977-09-20 1978-09-19 Elektrisk drevet foldevegg
CH978178A CH635163A5 (de) 1977-09-20 1978-09-19 Elektrisch betaetigbare, zusammenfaltbare trennwand.
AT0676278A AT378570B (de) 1977-09-20 1978-09-19 Steuereinrichtung fuer den elektrischen antrieb zum oeffnen und schliessen einer faltwand oder falttuer
ES473515A ES473515A1 (es) 1977-09-20 1978-09-20 Perfeccionamientos en tabiques divisorios plegables acciona-dos electricamente.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/835,024 US4106544A (en) 1977-09-20 1977-09-20 Electrically operated folding partition

Publications (1)

Publication Number Publication Date
US4106544A true US4106544A (en) 1978-08-15

Family

ID=25268384

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/835,024 Expired - Lifetime US4106544A (en) 1977-09-20 1977-09-20 Electrically operated folding partition

Country Status (22)

Country Link
US (1) US4106544A (it)
JP (1) JPS5451235A (it)
AT (1) AT378570B (it)
AU (1) AU517049B2 (it)
BE (1) BE870567A (it)
BR (1) BR7806097A (it)
CA (1) CA1094112A (it)
CH (1) CH635163A5 (it)
DE (1) DE2840074C2 (it)
DK (1) DK151141C (it)
ES (1) ES473515A1 (it)
FI (1) FI64222C (it)
FR (1) FR2403442A1 (it)
GB (1) GB2004584B (it)
IT (1) IT1099083B (it)
MX (1) MX147404A (it)
NL (1) NL187922C (it)
NO (1) NO146068C (it)
NZ (1) NZ188259A (it)
PH (1) PH16942A (it)
PT (1) PT68453A (it)
SE (1) SE427291B (it)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887659A (en) * 1988-07-07 1989-12-19 Frommelt Industries, Inc. High speed folding door
US4953611A (en) * 1988-04-11 1990-09-04 Pella B.V. Partition wall consisting of double-walled panels coupled pivotally to each other
WO1992014897A1 (en) * 1991-02-26 1992-09-03 Modernfold, Inc. Improved movable wall system
US6470952B1 (en) 2001-06-06 2002-10-29 John Cline Bi-folding door
US6571855B1 (en) * 2002-03-28 2003-06-03 Modernfold, Inc. Flattener apparatus for a movable wall system
US6615894B1 (en) 2000-12-15 2003-09-09 Mckeon Rolling Steel Door Co., Inc. Self-closing single-sided accordion fire door
US20050241781A1 (en) * 2004-04-28 2005-11-03 Johnson James A Bi-fold door system
CN104563837A (zh) * 2014-12-21 2015-04-29 温贵 具有双连架杆联动机构的悬浮折叠门
USD741856S1 (en) * 2013-07-12 2015-10-27 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal
USD745006S1 (en) * 2013-07-10 2015-12-08 Semiconductor Energy Laboratory Co., Ltd. Image display device
USD745516S1 (en) * 2013-07-12 2015-12-15 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal
USD750064S1 (en) * 2013-07-12 2016-02-23 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal
WO2016033668A1 (pt) * 2014-09-01 2016-03-10 Fuillarat Junior Rafael Mecanismo automatizado para acionamento de envidraçamento
USD761254S1 (en) * 2013-07-12 2016-07-12 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19817210C2 (de) * 1998-04-17 2001-07-05 Helmut Rudolf Falttor
EP1088959A1 (de) * 1999-10-01 2001-04-04 Rudolf Helmut Falttor
JP6865790B2 (ja) * 2019-07-09 2021-04-28 株式会社Ｌｉｘｉｌ 空間制御システム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374821A (en) * 1965-10-14 1968-03-26 New Castle Products Inc Movable space divider structure
US3389741A (en) * 1966-09-20 1968-06-25 Rufus C. Bean Folding partition
US3448786A (en) * 1966-11-01 1969-06-10 Brunswick Corp Folding partitions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2737621A (en) * 1951-11-17 1956-03-06 Cons Car Heating Co Inc Electric motor control for door operation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374821A (en) * 1965-10-14 1968-03-26 New Castle Products Inc Movable space divider structure
US3389741A (en) * 1966-09-20 1968-06-25 Rufus C. Bean Folding partition
US3448786A (en) * 1966-11-01 1969-06-10 Brunswick Corp Folding partitions

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953611A (en) * 1988-04-11 1990-09-04 Pella B.V. Partition wall consisting of double-walled panels coupled pivotally to each other
US4887659A (en) * 1988-07-07 1989-12-19 Frommelt Industries, Inc. High speed folding door
US5025846A (en) * 1988-07-07 1991-06-25 Frommelt Industries, Inc. High speed folding door
WO1992014897A1 (en) * 1991-02-26 1992-09-03 Modernfold, Inc. Improved movable wall system
US5152332A (en) * 1991-02-26 1992-10-06 Modernfold, Inc. Movable wall system
AU648162B2 (en) * 1991-02-26 1994-04-14 Modernfold, Inc. Improved movable wall panel system
US6615894B1 (en) 2000-12-15 2003-09-09 Mckeon Rolling Steel Door Co., Inc. Self-closing single-sided accordion fire door
US6470952B1 (en) 2001-06-06 2002-10-29 John Cline Bi-folding door
US6571855B1 (en) * 2002-03-28 2003-06-03 Modernfold, Inc. Flattener apparatus for a movable wall system
US20050241781A1 (en) * 2004-04-28 2005-11-03 Johnson James A Bi-fold door system
USD745006S1 (en) * 2013-07-10 2015-12-08 Semiconductor Energy Laboratory Co., Ltd. Image display device
USD741856S1 (en) * 2013-07-12 2015-10-27 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal
USD745516S1 (en) * 2013-07-12 2015-12-15 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal
USD750064S1 (en) * 2013-07-12 2016-02-23 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal
USD761254S1 (en) * 2013-07-12 2016-07-12 Semiconductor Energy Laboratory Co., Ltd. Portable information terminal
WO2016033668A1 (pt) * 2014-09-01 2016-03-10 Fuillarat Junior Rafael Mecanismo automatizado para acionamento de envidraçamento
CN104563837A (zh) * 2014-12-21 2015-04-29 温贵 具有双连架杆联动机构的悬浮折叠门
CN104563837B (zh) * 2014-12-21 2016-03-30 温贵 具有双连架杆联动机构的悬浮折叠门

Also Published As

Publication number Publication date
ATA676278A (de) 1985-01-15
AU517049B2 (en) 1981-07-02
NZ188259A (en) 1981-07-13
BR7806097A (pt) 1979-05-02
CH635163A5 (de) 1983-03-15
PT68453A (en) 1978-09-01
GB2004584B (en) 1982-01-20
AU3906478A (en) 1980-02-21
DE2840074C2 (de) 1982-07-22
FI64222C (fi) 1983-10-10
ES473515A1 (es) 1979-05-01
DE2840074A1 (de) 1979-03-22
FI782688A (fi) 1979-03-21
NO146068C (no) 1982-08-04
IT1099083B (it) 1985-09-18
NO146068B (no) 1982-04-13
PH16942A (en) 1984-04-24
JPS5451235A (en) 1979-04-21
CA1094112A (en) 1981-01-20
FR2403442B1 (it) 1983-11-25
DK151141B (da) 1987-11-09
AT378570B (de) 1985-08-26
SE427291B (sv) 1983-03-21
NL7808960A (nl) 1979-03-22
GB2004584A (en) 1979-04-04
NL187922C (nl) 1992-02-17
IT7827789A0 (it) 1978-09-18
FI64222B (fi) 1983-06-30
FR2403442A1 (fr) 1979-04-13
DK411678A (da) 1979-03-21
NO783172L (no) 1979-03-21
DK151141C (da) 1988-04-18
SE7809796L (sv) 1979-03-21
JPS578271B2 (it) 1982-02-16
MX147404A (es) 1982-11-30
BE870567A (fr) 1979-01-15

Similar Documents

Publication Publication Date Title
US4106544A (en) Electrically operated folding partition
US6470952B1 (en) Bi-folding door
EP0296134B1 (en) Revolving door
RU2113586C1 (ru) Шарнирное приспособление
EP0405870B1 (en) Bi-fold door construction
US3618656A (en) Folding door apparatus
US9695623B2 (en) Powered folding doors
NO177914B (no) Garasjeport omfattende fleksibelt panel
US5242005A (en) Breakaway bi-folding door assembly
US4532743A (en) Sliding door assembly
ITMI20001000A1 (it) Gruppo di movimentazione per porte a profilo non rettilineo.
US3422878A (en) Foldable door for wall openings
US3494407A (en) Folding partition assembly
US3414040A (en) Folding partitions and operators therefor
JPH09242421A (ja) 自動ドアの安全装置
US1246314A (en) Folding-door structure.
US2680481A (en) Foldable closure for openings in walls
SU1348476A1 (ru) Раздвижные ворота
FI91986B (fi) Kääntölaite nostolamelliovien yhteydessä
JP2556731Y2 (ja) 軌道車両用の乗降場の折戸装置
JPH0640298U (ja) 電動式シャッターの安全装置
SU1221306A1 (ru) Устройство дл уплотнени притвора полотна ворот
SU1273483A1 (ru) Раздвижные ворота
US1237731A (en) Sliding door.
SU1013623A1 (ru) Поворотно-раздвижные ворота